Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for quickly calculating winding temperature distribution of oil-immersed transformer by adopting two-dimensional axisymmetric model

A technology for oil-immersed transformers and winding temperature, which is applied in calculation, computer-aided design, design optimization/simulation, etc. It can solve problems such as difficulties in direct calculation of 3D detailed models, inapplicability to engineering applications, a large amount of memory and time, etc.

Pending Publication Date: 2020-10-23
CHONGQING UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the 3D simulation method can obtain accurate loss distribution rules, for large transformers, the 3D magnetic field calculation model has a large number of grid nodes and units, and the numerical calculation using the 3D model requires a lot of memory and time. Direct calculations are too difficult for engineering applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quickly calculating winding temperature distribution of oil-immersed transformer by adopting two-dimensional axisymmetric model
  • Method for quickly calculating winding temperature distribution of oil-immersed transformer by adopting two-dimensional axisymmetric model
  • Method for quickly calculating winding temperature distribution of oil-immersed transformer by adopting two-dimensional axisymmetric model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0083] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0084] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for quickly calculating winding temperature distribution of an oil-immersed transformer by adopting a two-dimensional axisymmetric model, and belongs to the field oftemperature rise calculation and prediction of the oil-immersed power transformer winding, and the method comprises the following steps: S1, constructing and simplifying the two-dimensional axisymmetric model of a transformer core; S2, constructing an equivalent B-H curve and carrying out frequency domain solving on the electromagnetic model; and S3, carrying out coupling calculation on the temperature by adopting a nonlinear material heat flow model. According to the method, the dimension of the transformer model is reduced through the equivalent reluctance method, the B-H curve is convertedthrough the average energy equivalent method, frequency domain calculation of the model is achieved, and the method has the advantages of being high in solving speed and precision. And the magnetic field and loss distribution rule of the transformer winding and the iron core can be quickly obtained. According to the method, coupling calculation of nonlinear materials in multiple different physicalfields is achieved, the speed and temperature of different positions in the winding are obtained, temperature distribution of the oil-immersed power transformer winding can be mastered more comprehensively, the reasonability of the transformer winding structure is better verified, and the winding insulation structure optimization design is guided.

Description

technical field [0001] The invention belongs to the field of temperature rise calculation and prediction of oil-immersed power transformer windings, and relates to a method for quickly calculating the temperature distribution of oil-immersed transformer windings by using a two-dimensional axisymmetric model. Background technique [0002] The safe operation of power equipment is the first line of defense to ensure the safety of the power grid. As the key equipment of energy conversion in the process of power transmission and distribution, power transformer plays a very important role in the power transmission and transformation network, and its reliability is extremely high. Temperature rise is an important indicator reflecting the internal state of the transformer and its safe power transmission capability. On the one hand, the temperature rise of the transformer determines the available capacity of the transformer, and accurate calculation or detection of the temperature r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 郝建刘丛廖瑞金杨丽君张弦亮吴杰钟尧叶文郁
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com